Transportable lifting device



March 11, 1952 sso 2,588,749

TRANSPORTABLE LIFTING DEVICE Filed Jan. 20, 1950 Iuvem-ok',

Nuu; ER: Nussou Patented Mar. 11, 1952 UNITED STATES ATENT OFFICETRANSPORTABLE LIFTING DEVICE Nils Eric Nilsson, Mockeln, SwedenApplication January 20, 1950, Serial No. 139,601

a In Sweden November 11, 1946 3 Claims. (01. 254-439) 1 2 The presentinvention relates to a transporting studs l2 which prevent slipping ofthe standable lifting device of the type having a frame ard during useby engagement with the ground. supporting a rotatable cable drum for acable When using the device the lifting means 4 is passed over a returnpulley, said frame consistsecured to the part to be lifted (the log 5)and ing of a standard which may be placed with one 5 the device iserected directly adjacent the seend on the ground in unstable uprightposition curing point. The operator grasps the handle and which has ahandle by means of which said It with his one hand and holds the devicein standard may be braced with one hand during upright position whileturning the crank l with the lifting operation. his other hand so thatthe cable lifts the log 5.

The principal object of the invention is to pro- Since in the embodimentdescribed, the point vide a special embodimentof such known liftwherethe foot end lb is supported on the ground ing devices whichconsiderably facilitates the will be situated approximately in theprolongahandling of the lifting device. tion of the portion of the cable3 extending be- These and other objects and advantages of the tween thereturn pulley 2 and the lifting means invention will be clear from thefollowing de- 4 a ry small force will be necessa y to hold taileddescription of an embodiment shown as an the device in upright positionby means of the example only in the accompanying drawing in handle l0and in spite thereof there is no risk whi h; that the log 5 will slideagainst and possibly come Fig, 1 hows a side 1 ati of th lifti intocontact with and get caught on the standard vice, and 0 l duringlifting.

Fig. 2 a rear elevation thereof. What I claim and desire to secure byLetters Referring to the drawing, the liftin device Patent is: comprisesa standard I which is constructed as a 1. A transportable lifting devicecomprising a trestle with two tubular legs having an upper standard, astraight cross bar on the foot end end la and a foot end lb. The upperend la supof said standard, a handle on said standard ports a returnpulley 2 for a cable 3, the one free adapted for enabling an operator tobrace said end of which supports a lifting means 4shown standard withone hand during use in unstable here in the form of a pair of tongs forlifting logs upright position with said cross bar on the foot 5and theother end of which is wound around end of said standard resting on asupport and and attached to a cable drum 6 which is manualallowingswinging movements of said standard 1y rotatable by means of a crank lfor a customaround said cross bar, the upper end and the foot arygearing 8 with a latch pawl 9. The winch end of said standard being bentin the same diunit formed by the parts 6 to 9 is fixed approxirectionfrom a substantially straight intermedimately at the middle of thestandard I, and above ate portion of said standard in a plane at rightsaid unit there is a handle l0 which the operator 5 angles to said crossbar, a cable drum mounted maygras'p with one hand to hold the liftingdefor rotation on said intermediate portion of said vice balanced inunstable upright position durstandard with its axis of rotation at rightangles ing use. to the plane of said bent standard ends, a return Asappears from Fig. 1, the intermediate porpulley mounted for rotation onsaid upper standtion of the standard I is straight while the upper 40ard end with its axis of rotation at right angles end la is bent towardsthe side remote from the to the plane of said bent standard ends, acable Winch unit 6 to 9 and the foot end lb thereof is so having one endthereof attached to said cable bent in the same direction as the upperend la drum and the other end thereof being passed that the place wherethe standard stands on the over said return pulley, and a manuallyoperground (or other support),when the straight ini5 able crank forrotating said drum, the axis of termediate portion of the standard I isheld ver- IOtatiOII 0f Said crank t ing at right an tical, is situatedapproximately directly below the to the planeof said bent standard ends.return pulley 2. The arrangement is such that A t a ta l ft n d vicemprisin a the axes of rotation of both the cable drum 6 and Standard, &St cross bar 0n t e i001? end of the return pulley 2 are at right anglesto the said standard, ahandle on said standard adapted plane of the bentstandard ends la and lb. As for enabling an operator to brace saidstandard best shown in Fig. 2, the foot ends lb of the tuwith one handduring use in unstable upright. bular legs forming the standard Idiverge slightly po ition with said cross bar on the foot end of fromeach other in downward direction and are said standard resting on asupport and allowing connected by means of a transverse bar llhavswinging movements of said standard around said cross bar, the upperend and the foot end of said standard being bent in the same directionfrom a substantially straight intermediate portion of said standard in aplane at right angles to said cross bar, a cable drum mounted forrotation on the side of said intermediate standard portion remote fromsaid standard ends with its axis of rotation at right angles to theplane of said bent standard ends, a return pulley mounted for rotationon said upper standard end with its axis of rotation at right angles tothe plane of said bent standard ends, a cable having cross bar, a cabledrum mounted for rotation on said intermediate portion of said standardwith 3 its axis of rotation at right angles to the plane of. said bentstandard ends, a return pulley mounted for rotationon said upperstandard end with its axis of rotation at right angles to the plane ofsaid bent standard ends, a cable having one end thereof attached to saidcable drum and the other end thereof being passed over said returnpulley, said cross bar being situated on the same 'side of a plane thatis parallel with said interone end thereof attached to said cable drumand the other end thereof being passed over said return pulley, and amanually operable crank for rotating said drum, the axis of rotation ofsaid said standard resting on a support and allowing swinging movementsof said standard around said cross bar, the upper end and the foot endof said standard being bent in the same direction from a substantiallystraight intermediate portion of said standard in a plane -,at rightangles to said mediate standard portion and touches said return pulleyon the side remote jrom said intermediate standard portion, and'amanually operable crank for rotating said drum, the axis of rotation ofsaid crank extending at right angles to theplane-ofwaid'benirstandard-ends.- r

'Nnls ERIC NTLssoN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 178,854 Hydeiiu u'; June 20, 1876660,137 "Wenzelmann Oct. 23, 1900 807,878 Soper Dec. 19, 1905 BjornlieJan. 4, 1921

